People aged 38 and 39 will be able to book their Covid vaccine from Thursday morning in England.
Those now eligible will be able to sign up for their appointment on the NHS website from tomorrow morning.
NHS England will send text messages to 38 and 39-year-olds notifying them that they will be allowed to arrange their vaccination appointments.
People will be able to book in at a vaccination centre or pharmacy site through the national booking service.
Text invitations appear as an alert from "NHSvaccine" and include a link to the NHS website to reserve an appointment.
People who cannot go online can call the service on 119 instead to book their jab.
More than 53 million coronavirus vaccines have been given out by the NHS across the UK so far, and more than 18 million people have had two doses.
The news comes as a top scientist claims Britain is on course to be "completely back to normal" by the end of the year.
Social distancing could be scrapped on June 21, the date the government provisionally set to end all legal restrictions imposed by the pandemic.
But it is still unclear exactly when life will totally return to normal, after warnings some strict guidance could last beyond that final date in the lockdown roadmap.
Professor Graham Medley believes life could be back to normal by the end of the year, provided a Covid variant that dodges the vaccine has not emerged by then and that booster jabs are readily available.
Across the country the Government said on Tuesday that a further 20 people had died within 28 days of testing positive for Covid-19, while an extra 2,474 cases were confirmed.
It brings the grim official total to 127,629 and follows months of lockdown.
